LAB LOGA page on LabLog, a review site (not the lab's official page)
Ohkoshi Lab
Machine-translated · View original
The lab creates new materials that respond to light and electromagnetic waves from common, abundant elements.
AboutAbout the lab
New materials that respond to light and electromagnetic waves
The Ohkoshi Lab researches the creation of new materials that respond to light and electromagnetic waves, as well as new materials that solve environmental and energy problems.
Using chemical synthesis methods, the lab works on a wide range of materials, from metal complexes such as Prussian blue to metal oxides and alloys.
From common elements such as iron and titanium, the lab has created epsilon iron oxide, which has a large coercivity, and lambda-type titanium oxide, which switches between a metal and a semiconductor under light.
The lab has also proposed a new concept, heat-storage ceramics, which can store thermal energy for a long time.
Key terms
- Metal complex
- A compound formed when organic molecules or ions bind to a metal ion. Metal complexes show a wide variety of colors and magnetic properties.
- Phase transition
- A dramatic change in the state of a substance or the shape of its crystal when temperature or pressure changes.
- Terahertz waves
- Electromagnetic waves lying between radio waves and light. Their wavelength is even shorter than that of millimeter waves.
NewsLab news
Discovery of the "cradle" of photoinduced phase transitions
Ultrafast spectroscopy reveals the mechanism of a phase transition with vivid color change
Development of a material from which water can be extracted by applying pressure
Development of the world's thinnest terahertz-wave absorbing film for 6G
Professor Ohkoshi, Associate Professor Namai, and Assistant Professor Yoshikiyo received the 24th Yamazaki Teiichi Prize
ResearchResearch themes
The lab aims to open a new academic field of materials chemistry centered on physical properties, through the creation of ferromagnets with new physical properties and functions. Its themes are organized around each phenomenon the lab has discovered, ranging from correlation phenomena between light or electromagnetic waves and magnetism to the development of materials that address environmental and energy problems.
*Illustrative imageLong-Term Heat-Storage Ceramics That Store Waste Heat
The lab synthesized a new material in which part of the titanium in lambda-trititanium pentoxide is replaced with scandium. Under pressure it changes to a different phase, and it absorbs heat at temperatures below 100°C. It is therefore expected to be used as a material for storing hot water from power plants and waste heat from factories and automobiles.
*Illustrative imageMagnetic Recording Using Millimeter Waves and Terahertz Waves
The lab proposed a new recording method called focused millimeter-wave-assisted magnetic recording. It became the first in the world to succeed in reversing magnetic poles by applying focused millimeter waves to a magnetic film of epsilon iron oxide, opening a path to higher recording density for magnetic tape.
*Illustrative imageSuperionic Conducting Crystals Switched by Light
A cyano-bridged complex made of cesium, iron, and molybdenum is a superionic conductor in which protons travel through a hydrogen-bond network like a bucket brigade. The lab became the first in the world to observe that irradiating it with light lowers its ionic conductivity by two orders of magnitude, and that the conductivity recovers over time.
*Illustrative imageHeat-Storage Ceramics That Release Heat Under Low Pressure
Block-type lambda-trititanium pentoxide stores thermal energy for a long time and releases it simply when weak pressure is applied. Its pressure-induced phase transition occurs at the lowest pressure of any such transition in a solid, so it is expected to be used as a heat-storage material for automobiles and solar power plants.
MembersFaculty
The members of the Ohkoshi Lab include faculty, doctoral, master's, and undergraduate students, postdoctoral researchers, collaborating researchers, experimental assistants, administrative staff, and secretaries.As of 2026
- ProfessorOhkoshi Shin-IchiPublications ↗
- Associate ProfessorAsuka NamaiPublications ↗
- Assistant ProfessorKenta Imoto
- Assistant ProfessorMarie YoshikiyoPublications ↗
- Assistant ProfessorOlaf Stefanczyk
- Project Assistant ProfessorJiarui Fu
- Project Assistant ProfessorJessica McDougall
VoicesStudent voices
Compiled from answers by students who were in the lab. Ratings and reviews reflect individual students' experiences, not the lab's official views.
Students who take part in an interview may receive a thank-you gift worth ¥1,000, regardless of what they say.
On a 4-point scale, ● marks where students' answers fall
Who is this lab for?
What's great about this lab?
What did you learn after joining?
What's the vibe, and what is the professor like?
Where do graduates go?
RelatedLabs similar to Ohkoshi Lab
Tsukuda LabFaculty of Science, Department of ChemistryElucidating the mechanisms behind size-specific properties o…
Yamada LabFaculty of Science, Department of ChemistryRealization of original research concepts and functionalitie…
Yanai LabFaculty of Science, Department of ChemistryRealization of new materials and functions using molecules a…
Isobe LabFaculty of Science, Department of ChemistryMolecular design and synthesis; pioneering interdisciplinary…The information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Pigment Berliner Blau” Saalebaer / CC0 (cropped)
- Long-Term Heat-Storage Ceramics That Store Waste Heat: “Bell Bend Nuclear Power Plant cooling towers from the east” Jakec / CC BY-SA 3.0 (cropped)
- Magnetic Recording Using Millimeter Waves and Terahertz Waves: “Noticeboard ferrite magnet - multipole magnetization” Antonín Ryska / CC BY-SA 4.0 (cropped)
- Superionic Conducting Crystals Switched by Light: “Optical elements and green laser beem” Dasha Butova / CC BY-SA 4.0 (cropped)
- Heat-Storage Ceramics That Release Heat Under Low Pressure: “Car exhaust pipe” Santeri Viinamäki / CC BY-SA 4.0 (cropped)
- Related lab (佃研究室): “Gold255” Aleksandar Kondinski / CC BY-SA 4.0 (cropped)
- Related lab (山田研究室): “Potassium ferricyanide and its solution” Leiem / CC BY-SA 4.0 (cropped)
- Related lab (楊井研究室): “Pentacene molecule spacefill from xtal” Jynto (more from this user) / CC0 (cropped)
- Related lab (磯部研究室): “Carbon nanotube (8,8) 3D ball” Jynto / CC0 (cropped)
About LabLog
LabLog is a lab review app for students only. Student members at each university interview students in labs and publish what they say. Student voices can only be read by students who sign up with a university email address. Operated by bestiee Inc.
Learn more about LabLog ↗Search engines and AI may reference the basic lab info and rating summaries on this page and the description of LabLog. Student voices are for student members only. Automated collection by programs (scraping, or input to or training of AI) is prohibited under Article 8 of the Terms of Service. If you need data for research or analysis, please contact us.